Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| The Number of Beautiful Subsets | Medium | Solve |
| Smallest Missing Non-negative Integer After Operations | Medium | Solve |
| Make the Prefix Sum Non-negative | Medium | Solve |
| Remove Duplicates from Sorted Array | Easy | Solve |
| Single Number III | Medium | Solve |
| K Items With the Maximum Sum | Easy | Solve |
| Prime Subtraction Operation | Medium | Solve |
| Minimum Operations to Make All Array Elements Equal | Medium | Solve |
| Collect Coins in a Tree | Hard | Solve |
| Minimum Time to Eat All Grains | Hard | Solve |
| Form Smallest Number From Two Digit Arrays | Easy | Solve |
| Find the Substring With Maximum Cost | Medium | Solve |
| Make K-Subarray Sums Equal | Medium | Solve |
| Shortest Cycle in a Graph | Hard | Solve |
| Find the Longest Balanced Substring of a Binary String | Easy | Solve |
| Graph Valid Tree | Medium | Solve |
| Convert an Array Into a 2D Array With Conditions | Medium | Solve |
| Mice and Cheese | Medium | Solve |
| Minimum Reverse Operations | Hard | Solve |
| Beautiful Pairs | Hard | Solve |
| Prime In Diagonal | Easy | Solve |
| Sum of Distances | Medium | Solve |
| Minimize the Maximum Difference of Pairs | Medium | Solve |
| Minimum Number of Visited Cells in a Grid | Hard | Solve |
| Check if Object Instance of Class | Medium | Solve |